Internal combustion engine

Abstract

An internal combustion engine has a plurality of cylinders, a main combustion chamber and a pre-combustion chamber for each cylinder, and overflow passage which opens into the pre-combustion chamber, a fuel injection device and an incandescent ignition arrangement including one or two bar-shaped parts extending into the pre-combustion chamber and arranged so that they are located outside of the projection of the inlet opening of the overflow passage in the pre-combustion chamber and extend with their tips in the edge region of the fuel stream provided by the fuel injection device.

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims: 
     
       1. An internal combustion engine, comprising a plurality of cylinders; a main combustion chamber associated with each of said cylinders; a pre-combustion chamber; an overflow passage connecting said main combustion chamber with said pre-combustion chamber, so that said overflow passage tangentially opens into said pre-combustion chamber, said overflow passage having a central axis extending through a central plane of said pre-combustion chamber; a fuel injection device injecting a fuel in form a fuel stream extending also through said central plane of said combustion chamber; an incandescent ignition arrangement provided in said pre-combustion chamber and having a part which extends near said central plane and has a heated end arranged to extend to an end region of said fuel stream in its normal position, said ignition arrangement being located substantially outside of a projection of an inlet opening of said overflow passage along a gas stream flowing through said overflow passage into said pre-combustion chamber and therefore laterally outside of a contour of said inlet opening of said overflow passage. 
     
     
       2. An internal combustion engine, comprising a plurality of cylinders; a main combustion chamber associated with each of said cylinder; a pre-combustion chamber; an overflow passage connecting said main combustion chamber with said precombustion chamber, so that said overflow passage tangentially opens into said pre-combustion chamber, said overflow passage having a central axis extending through a central plane of said pre-combustion chamber; a fuel injection device injecting a fuel in form a fuel stream extending also through said central plane of said combustion chamber; an incandescent ignition arrangement provided in said pre-combustion chamber and having a part which extends near said central plane and has a heated end arranged to extend to an end region of said fuel stream in its normal position, said ignition arrangement being located substantially outside of a projection of an inlet opening of said overflow passage along a gas stream flowing through said overflow passage into said pre-combustion chamber, said ignition arrangement including two incandescent ignition devices which are arranged laterally near said flow stream at both sides of said central plane. 
     
     
       3. An internal combustion engine as defined in claim 1, wherein said ignition arrangement is inclined relative to said central plane. 
     
     
       4. An internal combustion engine as defined in claim 2, wherein said ignition devices are inclined relative to said central plane. 
     
     
       5. An internal combustion engine as defined in claim 4, wherein said ignition devices are inclined relative to said central plane so that they have different inclinations relative to the same. 
     
     
       6. An internal combustion engine as defined in claim 4, wherein said ignition devices are offset relative to one another in direction of said central plane and end in an end region of said fuel stream. 
     
     
       7. An internal combustion engine as defined in claim 1, wherein said ignition arrangement is bar-shaped.